package com.bjc.eduservice.controller;


import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.bjc.commonutils.R;
import com.bjc.eduservice.entity.EduTeacher;
import com.bjc.eduservice.entity.vo.TeacherQuery;
import com.bjc.eduservice.service.EduTeacherService;
import com.bjc.servicebase.exceptionhandler.GuliException;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author testjava
 * @since 2020-09-06
 */
@Api(description = "讲师管理")
@RestController
@RequestMapping("/eduservice/teacher")
//@CrossOrigin  //解决跨域
public class EduTeacherController {

    @Autowired
    private EduTeacherService teacherService;

    //1.查询讲师表所有数据
    @ApiOperation(value = "所有讲师列表")
    @GetMapping(value = "/findAll")
    public R findAll(){
        List<EduTeacher> list = teacherService.list(null);
        return R.ok().data("items",list);
    }

    //2.逻辑删除讲师的方法
    @ApiOperation(value = "逻辑删除讲师")
    @DeleteMapping(value = "/{id}")
    public R removeTeacher(@ApiParam(name = "id", value = "讲师ID", required = true) @PathVariable String id){
        boolean flag = teacherService.removeById(id);
        if (flag){
            return R.ok();
        }else {
            return R.error();
        }
    }

    //分页查询讲师的方法  limit 每页记录数
    @GetMapping(value = "/pageTeacher/{current}/{limit}")
    public R pageListTeacher(@PathVariable long current,@PathVariable long limit){
        //创建page对象
        Page<EduTeacher> pageTeacher = new Page<>(current, limit);

        try {
            int i =1/0 ;
        }catch (Exception e){
            throw new GuliException(20001,"执行了自定义异常处理...");
        }

        //调用方法实现分页
        //调用方法时候，底层封装，把分页所有数据封装到pageTeacher对象里面
        teacherService.page(pageTeacher,null);

        long total = pageTeacher.getTotal();//总记录数
        List<EduTeacher> records = pageTeacher.getRecords();//数据list集合

//        Map<String, Object> map = new HashMap<>();
//        map.put("total",total);
//        map.put("rows",records);
//        return R.ok().data(map);

        return R.ok().data("total", total).data("rows", records);
    }

    //4.条件查询分页的方法
    @PostMapping(value = "/pageTeacherCondition/{current}/{limit}")  //用@RequestBody时需要使用@PostMapping不然查不到
    //@GetMapping(value = "/pageTeacherCondition/{current}/{limit}")
    public R pageTeacherCondition(@PathVariable long current, @PathVariable long limit, @RequestBody TeacherQuery teacherQuery){ //required = false 参数值可以为空
        //创建page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);
        //构建条件
        QueryWrapper<EduTeacher> wrapper = new QueryWrapper<>();
        //多条件组合查询  类似mybatis动态sql
        //判断条件值是否为空，如果不为空拼接条件
        String name = teacherQuery.getName();
        Integer level = teacherQuery.getLevel();
        String begin = teacherQuery.getBegin();
        String end = teacherQuery.getEnd();
        //判断条件值是否为空，如果不为空拼接条件
        if (!StringUtils.isEmpty(name)){
            wrapper.like("name",name);
        }
        if (!StringUtils.isEmpty(level)){
            wrapper.eq("level",level);
        }
        if (!StringUtils.isEmpty(begin)){
            wrapper.ge("gmt_create",begin);  //>=
        }
        if (!StringUtils.isEmpty(end)){
            wrapper.le("gmt_create",end);   //<=
        }
        //排序
        wrapper.orderByDesc("gmt_create");

        //调用方法实现条件查询分页
        teacherService.page(pageTeacher,wrapper);
        long total = pageTeacher.getTotal();//总记录数
        List<EduTeacher> records = pageTeacher.getRecords();//数据list集合
        return R.ok().data("total", total).data("rows", records);
    }

    //添加讲师接口的方法
    @PostMapping(value = "/addTeacher")
    public R addTeacher(@RequestBody EduTeacher eduTeacher){
        boolean save = teacherService.save(eduTeacher);
        if (save){
            return R.ok();
        }else {
            return R.error();
        }
    }

    //根据讲师ID进行查询
    @GetMapping(value = "/getTeacher/{id}")
    public R getTeacher(@PathVariable String id){
        EduTeacher eduTeacher = teacherService.getById(id);
        return R.ok().data("teacher",eduTeacher);
    }

    //讲师修改功能
    @PostMapping(value = "/updateTeacher")
    public R updateTeacher(@RequestBody EduTeacher eduTeacher){
        boolean flag = teacherService.updateById(eduTeacher);
        return flag==true?R.ok():R.error();
    }
}

